P.D. James: The Black Tower

From the Publisher:
Responding to an old friend's call for help, Commander Adam Dalgliesh travels to Toynton Grange, a convalescence home in Dorset, where he finds his friend dead and himself, weakened by a recent illness, encounters multiple murders and malicious intrigue.

P.D. James: The Black Tower. An Adam Dalgleish Mystery. Scribner Book Company, ISBN: 0743219619 (September, 2001), 336 p., $13.00